nymaim | 3ef1e7a8323b8128f5ff3d96b12d47d9adbc5dcb00365f05917a2bc475389286

General

Target

file.exe
Size

2.3MB
MD5

691e49ac89d3114b017c276257dcb3d2
SHA1

d1870de529d937a2177a6dbdfbf066f77ae8abe8
SHA256

3ef1e7a8323b8128f5ff3d96b12d47d9adbc5dcb00365f05917a2bc475389286
SHA512

59da6c603f11f6f720b0321ec912976845dfb478b4296bf5c3cbbbc9541724dbff7d534304938fc8ef052838b806b50c4dc090382371057972610894eaa18352
SSDEEP

49152:Z2QM+MRnKUZyiB0Z+gErOW/iHKl5QBYo9VKjFFkbZ9Xv9xokR5Ulyh4ClxLA5hq:MAM4ZLMJYKloYAQabHXvLokRSMSCwDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
2424	is-96OVS.tmp
444	ezsearcher61.exe
1492	O0I8qtdd.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ezsearcher61.exe

Loads dropped DLL 1 IoCs

pid	Process
2424	is-96OVS.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ezSearcher\is-94IO7.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-6MIJN.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-R21GH.tmp	is-96OVS.tmp
File opened for modification	C:\Program Files (x86)\ezSearcher\ezsearcher61.exe	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\unins000.dat	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-OIP65.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-QE20P.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-HFQJD.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-IUBMP.tmp	is-96OVS.tmp
File opened for modification	C:\Program Files (x86)\ezSearcher\unins000.dat	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-OK9LO.tmp	is-96OVS.tmp
File created	C:\Program Files (x86)\ezSearcher\is-3CF7V.tmp	is-96OVS.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1924	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
444	ezsearcher61.exe
444	ezsearcher61.exe
444	ezsearcher61.exe
444	ezsearcher61.exe
444	ezsearcher61.exe
444	ezsearcher61.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 2424	4704	file.exe	81
PID 4704 wrote to memory of 2424	4704	file.exe	81
PID 4704 wrote to memory of 2424	4704	file.exe	81
PID 2424 wrote to memory of 444	2424	is-96OVS.tmp	82
PID 2424 wrote to memory of 444	2424	is-96OVS.tmp	82
PID 2424 wrote to memory of 444	2424	is-96OVS.tmp	82
PID 444 wrote to memory of 1492	444	ezsearcher61.exe	83
PID 444 wrote to memory of 1492	444	ezsearcher61.exe	83
PID 444 wrote to memory of 1492	444	ezsearcher61.exe	83
PID 444 wrote to memory of 5088	444	ezsearcher61.exe	91
PID 444 wrote to memory of 5088	444	ezsearcher61.exe	91
PID 444 wrote to memory of 5088	444	ezsearcher61.exe	91
PID 5088 wrote to memory of 1924	5088	cmd.exe	93
PID 5088 wrote to memory of 1924	5088	cmd.exe	93
PID 5088 wrote to memory of 1924	5088	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Users\Admin\AppData\Local\Temp\is-319FK.tmp\is-96OVS.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-319FK.tmp\is-96OVS.tmp" /SL4 $801BC "C:\Users\Admin\AppData\Local\Temp\file.exe" 2185033 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Program Files (x86)\ezSearcher\ezsearcher61.exe
    "C:\Program Files (x86)\ezSearcher\ezsearcher61.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:444
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\O0I8qtdd.exe
      4⤵
      Executes dropped EXE
      PID:1492
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ezsearcher61.exe" /f & erase "C:\Program Files (x86)\ezSearcher\ezsearcher61.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5088
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ezsearcher61.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\ezSearcher\ezsearcher61.exe

Filesize
3.3MB

MD5
8a178840b1966b765dacee6b49d7e225

SHA1
e38daa7e0f6c02912d1b34f5c6c211f4064c83d7

SHA256
e2ef5100274fac0657a82cdb6c779f22507e7a5cc1b575391ddad30e33ea6c3a

SHA512
eea046bfa125f8dd272a41ea4d323604c6c93bc48e90e1d3aba923432a2e3b86dbe50320457f18a19bb05ef3092b8f4aa0a0da9fe56e7eaa970ea26e44a1b772

Download Submit
C:\Program Files (x86)\ezSearcher\ezsearcher61.exe

Filesize
3.3MB

MD5
8a178840b1966b765dacee6b49d7e225

SHA1
e38daa7e0f6c02912d1b34f5c6c211f4064c83d7

SHA256
e2ef5100274fac0657a82cdb6c779f22507e7a5cc1b575391ddad30e33ea6c3a

SHA512
eea046bfa125f8dd272a41ea4d323604c6c93bc48e90e1d3aba923432a2e3b86dbe50320457f18a19bb05ef3092b8f4aa0a0da9fe56e7eaa970ea26e44a1b772

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-21SNM.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-319FK.tmp\is-96OVS.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-319FK.tmp\is-96OVS.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\O0I8qtdd.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\O0I8qtdd.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/444-143-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/444-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/444-142-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/444-155-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/444-152-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/4704-134-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4704-151-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4704-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4704-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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